Congressional Member And Staff Organizations

This page is for the exclusive use of House staff with a U.S. House of Representatives email account. Accounts will be checked against existing databases: If no account exists, the request will not be processed and there will be no response from the Committee on House Administration.

Please read all rules pertaining to CMOs and CSOs before sending the required information to cmocsoregistration@mail.house.gov to submit a request.

Congressional Member Organizations

Members of Congress may form a Congressional Member Organization (CMO) in order to pursue common legislative objectives.

Each Congress, CMOs must electronically register with the Committee on House Administration.

Step 1: Prepare a letter on official letterhead, to the Committee on House Administration with the following information:

1. CMO Name
2. Statement of Purpose
3. Officers of the CMO
4. Name, Phone Number, and Email Address of staff designated to work on issues related to the CMO

Step 2: Prepare a letter on official letterhead (Sample Request letter) via email at cmocsoregistration@mail.house.gov.

Step 3: Receive approval from the Committee on House Administration.

Step 4: Check for your CMO's listing.

Congressional Staff Organizations

A Congressional Staff Organization (CSO) is an organization, a majority of whose members are House employees, that exists for the purpose of facilitating interaction among congressional staff. Each Congress, CSOs must register with the Committee on House Administration. At least one officer of a CSO must be an employee of the House, and all officers must be employees of the House or Senate. A CSO should contact the Committee on Standards of Official Conduct at x57103 before accepting anything of monetary value from a private source.

Each Congress, in order to use official resources of the House (i.e., inside mail, House Intranet, etc.), a CSO must electronically register with the Committee on House Administration.

Step 1: Identify a sponsoring Member for the CSO.

Step 2: Prepare a letter on official letterhead from the sponsoring Member, to the Committee on House Administration with the following information:

1. CSO Name
2. Statement of purpose
3. Name, Phone Number, and Email Address of officers of the staff organization
4. Specify which of the following resources the CSO requests use of:
   • a. Inside mail
   • b. House Intranet site
   • c. Postbox at House Postal Operations
5. Name of individuals designated to maintain web and mail services on behalf of the CSO (if applicable.)

Step 2: Prepare a letter on official letterhead (Sample Request letter) via email at cmocsoregistration@mail.house.gov.

Step 3: Receive approval from the Committee on House Administration.

Step 4: Check for your CSO's listing.